Imam Shafa’i’s (RE) remaining quiet before replying

It has been written about Imam Shafa’i (may Allah have mercy on him) that when someone asked him a question sometimes he remained quiet for a period of time and did not reply immediately. Someone asked, “Hadhrat! It has been so long but you have not said anything.” Imam Shafa’i RE replied;

“I am quiet because I am reflecting on whether it is better for me to stay quiet or speak.”